Plug-switch.



i TENTED JULY 16, 1907.

No. 800,360l

EARL C. ELDREDGE, Ul" SiltlN Specification. of Letters laten't.

Patented July 16, 1907.

Application filed July 27,1966- lerial. lo- 327%991.

.To all 'whom it may concern: l

'le it known that l, EARL Etnnranor; n citizen oi the United States of America, residingt at Springfield7 in the county of Hampden and State ot' Mussuchusetts, i have invented new and useiul Improvements in Plug Switches, o which the ioiloiifing a specification. i

This invention relates to improvements in plug switches and particularly to that class which are used i n automobiles that employ both a battery (either primary or secondary) and a magneto or dynamo for iurnishing electrical energ f for ignting the vapor-ous charge in the cylinders oi internal combustion engin the invention being adepttd to connect the lmtter'y to taken, and showingI kthe common terr inni,

' taken on the same sectional line ns Fig. l, but showing the spark-coils, for instance, for storting the engine, and after the same is started to disconnect or cut out. the battery and cut in or connect the magneto to the Spark-coils, thesetwo operations being carried out by means oi a switch employing n single plug only. 'lhe position of the plug in the switch )lc-termines whether the battery, magneto, (or dynamo) is connected in the circuit of the spark-plugs.

In the drawing formingr part of this applic-ndern@ Figure l is a sectional View through the axis el thc switch showing the plug nornutlly retained therein without closing either circuit. lig. 2 yshows n YView the plug so as to connect. the buttery tothe spark-coils. Fig. 3 is also a vertice-l sectional view through the unis, but showing the plug thrust into the switch so es to dif:- Connect the buttery andro-nnecting the dynamo or mnt" neto in the spurlecoil circuit. Fig. i is tt di-.\ tuoni-ntic l view showing how my improved switch is .connected l with both thebztttery and magneto. lig. 5 is u s-z-f-tionirl view through the axis oi the switch but in d plone itt light angles to the plane onwhich Figs. 1.2 und Il :ne

Fig. ii is :t of my switch re View showing the conducting pieterI moved and developed.

Referring to the drawings in detail, a designati-s n, plate of any approved form oi conducting nnitcrittl, preferably brass, having means, its the screwsy b, for .securing the saune to any suitnble fixed position.

c designates a cylindrical piece oi any insulating mun teriuhas hard rubber, 'that is secured to the pluie o by means of the screwstl. The cylindrical piece c is provided with an opening thcrethrough7 designated at c.

Soldered or otherwise secured to the platte o, is n tubu lar piece f, one side oi which is slitted for the purpose of forming a. resilient tongue (,f having a deteni or ol''set portion h at its inner end7 the purpose o which for engaging the annular grooves i und i und il on the plugj, for holding the same securely in different positions in the switch.

etween the grooves il und i on the plugj located e piece of insulation y" us rubber, und uniform in (li-:mieter with the plug. Secured to the outer sufi-.ice ol the cylindrical piece c by screws is it piece oi conductiwL mutt-rial nf., und prelerably spring brn This part is slitterl7 shown at n, so as to provide n resilient or spring linger o that extends over the axial or center line oi the piece c, and in the path or' movement or' the plug j for permitting engugemen of the sume when pushed inwnrd, :is shown in the ligurcs, thus closing the dynamo circuit us hereinafter described.

integral with the part m is u portion p that his soldered thereto n short cylindricnl post q thni ihre-.1ded for receiving the binding screw r to which the dynamo terminal is secured.

Oppositely located to the part t is Vanother piece of resilient material s that is provided with the overhenging linger portion lv in the same nutnncr its the portion o described, but located at u less distance from the end of the cylindrical piece e thnn the linger o, the purpose of which to close the circuit through the battery when the plug is pushed inward so that. the r ,silii-.nt tlcttnt /t eng-tiges the groove t (seo lfig. 2) und the finger l. the The picco s is .ilsr provided with it bindingr post construction, the sume n win groove gil.

as des ribed in connection with the piece m.

o und t nrc .substztntinlly in nlinement with the opcning e or' the cylindric-.il pic-cc e.

il'ppositcly locnted to the two conducting pieces m und s is u strip oi' metttllir: nntterinl tt that is secured lg. This strip as u common termiiml l`or both sources of electric-.tl energy, the current passing from one of the sources ol' energy to the strip 1I und binding post u to Ino phttc u, tubulur piece f, tongue y, plug j, und from thence to either one of the flexible ling-ers o or t according to whether the plug is pushed so its to engage either one or the other of these contztct fingers, as shown in Figs. 2 or 3, thusl closing the circuit through the spark-coils or' the engine.

The norm-il position oi the plug is shown in Fig. l whereI the groove l is engaged by the spring-linger It, :ind indicnted 'by n click. Upon pushing the plugj inward so :is to engage the shorter contact finger l shown in Fig. 2, the current posses from the buticr to the wire y; that is secured to the common-terminul strip o, iront thence to the pitite u, tubular piece f, flexible strip h, plug` j, to the contact linger l., philo s, binding screw il, wire 7, to the other terminal or the buiitery fc. Alter the engine is Sturt ed in this wuy by current from the buttery, the plugj i. pushed inward to the position Shown in Fig. il, the linger L tht-n cngnf'fing the insulated portion fl of the plug culting'out the buttery, while the Contact finger o is brought into enifngcmcnl. with the groove ir' on the end ol the plug shown. The current then flows from one termiina piene, their ii'eo onda il l tim insulating; plebe. i 'im lim bore, :i ng nu in- 5G ui''nce, tim '.:onnct tinge! boing; nrt/vidad with portions for ngz 5' the ni'ipliei'tti fronton of the for iioldintr the :mins is din l'iii locked porliionn, wl; y when the plug is brought in Contact in moco. )n with tlm lingers the Two sources of energy muy b3 om :wind mld o5 t disnnnocied in Succession. l l :t A Switch 'of the clitos tim'criiioal, in combination, IL- l1ri=e-plzitc lmvingoy :in owning; il ^i :tlnon5 i1, :1n ldtzulziting ,n f nieve provided with 41 horn :ind pinto 1G Although I havedescnbed the use of my Svlbch m so tha thv lloro :1nd opening .1( in i'ogistox', n. tubulin' (3() CODHECOD Wi'th an internal Combustion "angine, if, iE pien seein-od to t'ne huso-pluie :1nd iociittd within the bore evident thtits use is not i0 b9 limited toguh plu-P099, l of tlm insulated piece. :t common terminal :,'Qcuied to the l l mi of 'he magneto 4 by the wir@ 5 to iii@ wir@ gf, -omi inon toi'minoi u, plate a, tubular picco f, strip la, ping j, to the Contact linger o, l inding-post r on the part-m,

Wire z back to the othei- 'ti inni of the magncix) 4. 5 It is thus seen that .i have devised a simpfte and 1 inexpensive plug-switch having only one ping for ziccomplishing the double purpose o f connecting and disconnecting eithei' the battey-y' or magneto (or dyllamo) for igniting the vaporous change.

u is also to be underswodihat the diagrammatic huso-pinto. n plurality ot' contatti* nprf; secured to die ill-- sulzxting picco :1nd having: tlwil' fron mdr. lomto :it di View only Shows In a general Way HOW thc 'Wtph 1S t ferent distances from tin` lnfinlziting: picco und 1511!). 15 Used t0 Connect and disconnect dfferm SOJICGS 0f tiully in nlinomunt with tlio llore ot' the ins'nlutlng n electrical energy for ignition ptn-poses, and I have i om; novi n sent-s of grooves, i; :tm-tim' m nu: Samt, not doomed it nocossatw to reiter in dotail to the not im' mviie'i ""m a inulllm m fw" Whewh" who? i@ nqqary OQQOOS as Sd in .cuil with rnim Hyg" t cont-wt (in fl'el's nu engaged ;ix ft1 1\'ol hy the film: Antivh windt-nt sources@ of ele-vtm muy no (mi ioctvd :md 7() imno, as Spark-coils, condonsern, and make :ind brook .isfwnnwld f4, dim-Wm una S @(mjhcdr 20 devices. l. An olvctl'izzii Switch. :i luist* into, :i plan.' ltflvilg t! im: ol' -pi-x'illlioi'ai und longitudinally .www

in ordm' to determine tho position of tho ping; williin iii@ vnmh, 11mm pltittd Lin indtx t Mio o1 gloom i mmmmg mm L In um mm Winch, when tho ping ongzigos the hortvr Contact iinmmwim the .ww il img o; @Umm mmf,

L sush with the onto!" stirftir(j oi' tho plato a, as the plitttund in iilinonwnt with the ti-:wol of tie plug. .ft shown in Fi?, 2 att it). This index i'in; Porinitsr :in m0 limmil 0H lll virile wlniroln' 'ffl"i ilntftftnat@ visual doterniinntion of tho position of ino lo kozi in one tmdtion :t solute of snol-g3 

